Outbound calls not going on SIP trunk with CME

[Alexander Nejo]

Hello Everyone, i have a sip trunk on CME, and inbound calls was going initially, but the outbound was having issue. The SIP trunk is registered, but i can see "sip/2.0 500 internal server error" on the debugs

I have limited knowlegde on cme. 

Kindly advice on what i can do to resolve the outbound and inbound calls.

Attached are the configs and ccsip debugs

[Roger Kallberg]

This article and the link to this guys blog might as well be helpful to you. https://community.cisco.com/t5/collaboration-blogs/handle-cube-registration-authentication-like-a-boss/ba-p/3660492

He has some really good posts about how SIP works and some of the common pitfalls.

[Roger Kallberg]

Not related to you're stated issue with inbound calls with no audio, but these are changes that I would have done on the dial peers.

dial-peer voice 20 voip
 no voice-class sip early-offer forced
 destination-pattern .T !This should be altered to something that does not match all and anything. Using .T is a very bad habit. If you use a breakout code, like 0 or 9, to make outbound calls I suggest that you alter this to destination-pattern 0T or 9T
 no voice-class sip profiles 1 !No point in having this on the dial peer as you have it on the tenant as well. If you only want to affect outboud calls by this SIP profile keep it on the dial peer, but remove it on the tenant
!
dial-peer voice 10 voip
 no session target sip-server
 no incoming called-number .
 no voice-class sip early-offer forced

Apart from this I would strongly suggest that you alter this in the global voice section.

 ip address trusted list
  no ipv4 0.0.0.0 0.0.0.0
  ip address trusted authenticate
 no allow-connections h323 to h323
 no allow-connections h323 to sip
 no allow-connections sip to h323